Baker&#39;s-oven attachment.



R. L. GILLISPIE.

BAKBRS OVEN ATTAGHMENT.

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1,002,671. I 1 Patented Sept. 5,1911.

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B. L. GILLI SPIE.

BAKBRS OVEN ATTACHMENT.

APPLICATION FILED IEBJ, 1911.

1,002,671. Patented Sept. 5,1911.

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WIN/E8858 F R. L. GILLISPIE.

BAKER'S OVEN ATTAGHMBNT.

11211110111011 FILED r1111. 1911.

1,002,671 1 Patented Sept. 5, 1911.

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WITNESSES l/WE/VTUR E 7 ATTORNEYS COLUMBIA i'LANOORAPH C01, WASHINGTON.D. C.

ROBERT LIVINGTON GILLISPIE, OF NEW YORK, N. Y.

BAKERS-OVEN ATTACHMENT.

Specification of Letters Patent.

Application filed February 1, 1911.

Patented Sept. 5, 1911. Serial No. 605,870.

To all whom it may concern:

Be it known that 1, ROBERT L.

GILLISPIE, a citizen of the United States, and

a resident of the city of New York, borough of Broolc.

lyn, in the county of Kings and State of New York, have invented a newand Improved Bakers-Oven Attachment, of which the following is a full,clear, and exact description.

This invention relates to a new and improved attachment for a bakersoven, in the form of an inlet, whereby access may be had to the interiorof the oven in a most convenient and readily accessible manner by meanswhich can be readily controlled, and which will be simple andinexpensive.

An object of this invention is to provide a door for a bakers oven whichmay be readily opened from the exterior of the oven, and which will beso controlled as to simultaneously illuminate the interior of the ovenwhen the door is opened.

Another object of this invention is to provide a bakers oven with aduplex door, which may be opened bodily to permit access to the interiorof the oven through a large opening, or which may be opened partiallywhen it is desired to have access to the interior of the oven, withoutthe danger of cooling the oven and causing the material being baked, tospoil.

A further object of this invention is to provide independent means forcontrolling the illumination of the interior of the oven when access ishad to the interior of the oven by means of the supplementary door only.

A further object of this invention is to provide a door for an oven,which may be manipulated in such a way as to simultaneously control themovement of a damper, to permit the fumes from the oven to pass up intothe flue without coming out into the room.

A still further object of this invention is to provide transparentmembers through which the interior of the oven may be illuminated andviewed, with means for manipulating the same into and out of oppositionto the interior of the oven, whereby the transparent members may be inproper position when desired, and may be moved out of contact with theheat when not in use.

These and further objects, together with the construction andcombination of parts, will be more fully described hereinafter andparticularly set forth in the claims.

Reference is to be had to the accompany ing drawings forming a part ofthis specification, wherein the attachment is shown detached from theoven, for the purpose of simplicity, and in which like characters denotecorresponding parts in all the views, and in which Figure 1 is a frontView in elevation, showing the main door and the supplementary doorclosed; Fig. 2 is a top plan view, with parts broken away to show theunderlying structure; Fig. 3 is a vertical section on the line 33 ofFig. 1; Fig. 1 is a vertical section through the illuminating casing orchamber, showing the illuminator in its nonilluminating position whereinit does not illuminate the interior of the oven and the light is dim;Fig. 5 is an enlarged vertical section, taken on the line 55 of Fig. 3showing only the supplementary door open; and Fig. 6 is a verticalsection through the illuminating casing or chamber, showing theilluminator in the position in which it illuminates the interior of theoven, with the light in full glow.

Referring more arate parts of this the form shown in particularly to thesepinvention as embodied in the drawings, 1 indicates a frame, which isadapted to be inset in the door opening of the oven and converges fromthe room side toward the oven side, as seen in Fig. 2, so that allpoints of the interior can be readily reached.

For the purpose of closing the inlet for the oven formed by the frame 1,there is provided a door 2, which may be a single integral door, or maybe a composite door, as shown in the drawings, which is shown pivotallyconnected at its upper end to the frame, so as to swing open into thedottedline position shown in Fig. 3. It will be notedthat the door is alittle wider than the opening in which it is hung, so that a positiveclosing lit with the frame will be made. The door 2 is nicelycounterbalanced by a member 3, which is connected thereto by brackets 4,which are preferably of gooseneck form, so as to avoid portions of theframe and bring the member 3 into proper cooperative relation with adamper 5. This damper 5 is pivotally mounted intermediate its side edgesin an outlet vent 6, whereby, when the door 2 is opened, the fumes fromthe oven can pass up through the outlet into the chimney, if desired. Itwill be noted that the damper 5 projects beyond the vent 6 a sufiicientdistance on each side so as to contact therewith when closed, to form apractical, tight fit. This damper is so hung that it will automaticallyopen when the member 3 is removed from contact therewith, into theposition shown in dotted lines in Fig. 3; that is to say, the damper iseccentrically pivoted on the frame 1, so that the lower half willautomatically swing the damper into a substantially vertical positionwhen the member 3 is displaced, so that it no longer holds the damper inits horizontal position.-

The door 2', and thus the damper 5, are manipulated by operator 7, whichis shown in the form of a link projecting through an opening 8 the frontof the frame 1, that is, to the front of the oven,

Where it is provided with a convenient handle 9;- The movement of theoperator 7 may be prevented, and thus the door 2 locked in its closedposition, by means of a latch 10, which is pivotally connected to theframe 1, and is adapted to be swung in front of a lug 11 on the operator7 so as to prevent the outward movement of the operator. hen: the dooras a whole is locked in its closed position in this manner, access maybe still had to the interior of the oven, but to a smaller extent,which, however, is advantageous under many conditions where it isnotdesired to cool the oven by too great a draft of air. This may beaccomplished by providing a supplementary door 12, which forms a part ofthe main or composite door 2, and is in the form of a panel hingedintermediate its top and bottom edges, to the main or body portion ofthe door 2, and sobalanced that when unchecked, it will automaticallyassume a substantially horizontal position, such as that illustrated inthe dotted lines in Fig. 3. This balancing may be done by eccentricallyloading one side of the panel, as by means of a member 13 securedthereto. The supplementary door 12 can be locked in its closed positionand in substantial alinement with the main portion of the door 2, bymeans of a latch 14, which engages a lock 15 on the door. This latch ispivoted to the main portion of the door 2, and can be readily releasedby a simple upward push. A further latch 16 may be provided for thisdoor, for more positively looking it to the main door 2. When thesupplementary door 12 is open, in the position indicated in the dottedlines in Fig. 3, it discloses a window 17, normally concealed by theupper leaf of the supplementary door. This window 17 has a transparentmember 18 located inali-nement with an opening 19 in the body of thedoor 2.

v This transparent member 18, which may be of any suitable character,such as mica, is located in a sash 21, which is detachably held in thewindow frame 17 by means of a stationary latch 22 and a movable latch23,

r so that it can be removed for the purpose of renewlng or cleaning. Thewindow 17 itself is slidingly mounted in guides 24, so as to be capableof moving, to bring the transparent member 18 out of alinementwith theopening 19, and thereby protect it from the fumes and heat of the ovenwhen it is not desired to look into the interior of the oven.

The window 17 may be manipulated in any suitable manner, as by means ofa handle 25.

In order that the interior of the oven may be illuminated when eitherthe supplementary door or the composite door is open, so that the bakercan see the contents of the oven, there is provided an illuminator 27,which may be of any suitable form, such as that described hereinafter,and which is located in a chamber 28, formed by a casing 29 located onone side of the frame 1. The illuminator may be rotatably supported on aframe 30 by means of vertical stub shafts 31,- and this frame may beslid-ingly mounted in guides 32 in the casing 29, so that theilluminator can be withdrawn from cooperative juxtaposition to theinterior of the oven to a point within the room, so that it can berenewed, changed or cleaned. The illuminator may be provided with acircular bottom 33 and a circular top 34, spaced apart from each otherby a somewhat cylindrical partition 35. In this case, the partition 35is shown to consist of an opaque portion 36 and a transparent portion37. The latter may" be of any suit-able material, such as mica. It willbe seen by reference to Figs. 2 and 6 that the illuminator extends inopposition to an opening 38 located on the oven side of the casing 29',so that the light from the illuminator can be alternately thrown intothe interior of the oven and cut off from the interior of the oven byrotating the illuminator so as to alternately bring the transparentportion 37 and the opaque portion 36 of the partition in opposition tothe interior of the oven. The motion of the illuminator may be limitedby one or more stops 39, so that the operator will be prevented fromaccidentally leaving the illuminator in a condition where the light ishalf shining through the opening 38.

The source of light for the illuminator 27 may be of any suitablecharacter, such as the gas-jet 40 shown. In this case, the gasjet isshown as being connected to a supply pipe 41, by means of bracket pipearms 42 and 43 pivotally connected together. Directly below the pivotalconnection of the pipe arms 42 and 43, there is shown a cam follower 44,which passes between curved cam ribs 45 and 46 on the illuminator 27 sothat when the illuminator is rotated from its illuminating position toits non-illuminating position, the jet 40 will be alternately thrown infront of a reflector 47 in opposition to the transparent member 37, andaway from the transparent member 37 The limits of movement of the jet 40may be determined by any suitable means, such as pegs 48 and 49 locatedon opposite sides of the arm 42 on the illuminator 27. The illuminatormay be manipulated in any suitable manner, as by means of a link 50,projecting through the front of the casing 29. The gas to the pipe 41and thus to the jet 40 may be cont-rolled by a link 50, when the latteris used to manipulate the illuminator 27, by providing a valve,indicated at 51, in a supply pipe 52 connected-to the pipe 41, which maybe operated from the link 50 by means of a lever 53. It will be noted byreference to Fig. 6 that this lever 53 is provided with a key-hole slot54, whereby it is adapted to dctachably engage a peg 55 on the link 50.It will thus be seen that when the opaque portion 36 of the partition islocated in opposition to the opening 38, the jet 40 will be providedwith a small supply of gas, so that merely a pilot flame, such as thatillustrated in Fig. 4, will be in existence. It will also be seen thatwhen the transparent member or portion 37 on the partition is inopposition to the opening 38, the jet 40 will be supplied with asufficient amount of gas to form a large flame, as illustrated in Fig.6.

When the composite or main door 2 is used as a single unit and openedbodily, it may be desirable to control the flame to the illuminator fromthe operator for the door 2. In this event, there is provided a secondsupply pipe 56, connected to the pipe 41, and havinga valve, indicatedat 57, which is operated by a lever 58. This lever has a pin-and-slotconnection with one of the opcraters 7 of the door 2. It will be notedat this point that the operators 7 and the pipes 56 are duplicated onopposite sides of the frame 1, so that. the door can be controlled fromeither side, and also so that the illuminator may be provided on eitheror both sides of the frame 1.

The operation of the device will be, readily understood when taken inconnection with the above description. Then it is desired to have fulland complete access to the interior of the oven, the door 2 is swung asa whole into the position indicated by the dotted lines in Fig. 3, bymanipulating one or the other of the operators 7. This manipulation willremove the counterbalancing member 3 from its locking posit-ion withrespect to the damper 5, so that the latter will automatically open,- byreason of its eccentric overload on one side of its pivot. Thus, whenthe door 2 is open, any fumes which may come from the interior of theoven will pass up through the vent 6, which may be connected to theflue. By closing the door 2, the member 3 will automatically come incontact with the under side of the damper 5, closing it at the same timethat the door 2 is closed. However, if desired, the damper 5, beforeclosing the door 2, can be swung slightly to one side, so as to permitthe member 3 to pass without closing it. In such a case, the vent 6 maybe open, even when the door 2 is closed. With the opening of the door 2,the valve 57 will also be opened, so that the jet 40 will be providedwith a full supply of gas, and may illuminate the interior of the ovenwhen the transparent member 37 is in opposition to the opening 38. Insuch an event, the valve lever 53 may be disconnected from the link 50by means of a key-hole slot 51. l/Vhen once closed, the composite door 2may be locked closed by slipping the latch 10 in front of the lug 11 onthe operator 7. If it should be desired to have only partial opening ofthe inlet to the oven, the supplementary door 12 can be unlatched, whenit will automatically swing into the dotted line position indicated inFig. 3. In such an event,'the illuminator may be controlled by the link50 and the valve lever 53. The purpose of rotating the illuminator is toprotect the transparent portion 37 of the partition of the illuminatorfrom the fumes and heat of the oven when not in use. It will be seenthat when the supplementary door 12 is opened, besides permitting accessto the interior of the oven, it permits the baker to look through thebody port-ion of the door 2, by shifting the window 17 into such aposition that the transparent member 18 will be in opposition to theopening 19. When the operation is completed and it is no longer desiredto get at the contents of the oven, the transparent member 18 of thewindow 17 may be protected from the heat and fumes of the furnace bysliding the window sidewise before closing the door 12.

It will thus be seen that there is provided a simple and efiicientdevice, which will properly illuminate the interior of the oven andpermit as large an inlet opening to the oven as desired.

While I have shown one embodiment of my invention, 1 do not wish to belimited to the specific details thereof, but desire to be protected invarious changes, alterations and modifications which may come within thescope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Let-- ters Patent 1. The combination with a frame adapted to providean inlet for an oven, of a composite door for said inlet, comprising abody portion pivotally connected to said frame, and a supplementary doorpivotally connected intermediate its top and bottom edges to said bodyportion so as to swing from a position co-ext-ensive with said bodyportion to a positiona-t an angle to said body portion.

2. The combination with a frame adapted to provide an inlet for an oven,of a composite door for said inlet, comprising a body portion pivotallyconnected to said frame, a supplementary door pivotally con nected tosaid body portion so as to swing to a position at an angle to said bodyportion, and a latch for locking said supplementary door in substantialalinement with said body portion to form ofsaid supplementary door andsaid body portion said composite door. 7

8. The combination with a frame adapted to provide an inlet for an oven,of a composite door for said inlet, comprising a body portion pivotallyconnected to said frame, a supplementary door pivotally connected tosaid body portion, an operator for manipulating said composite door, alatch for locking said composite door against movement as a. whole, anda latch for locking said supplementary door to said body portion.

4:. The combination with a frame adapted to provide an inlet for anoven, of a composite door for said inlet, comprising a body portionpivotally connected to said frame, and a supplementary door pivotallyconnected to said body portion, said body portion having a windowtherein normally covered by said supplementary door, whereby, when saidsupplementary door is opened,

the interior of said oven may be viewed through said body portion.

5. The combination with a frame adapted to provide an inlet for an oven,of a composite door for said inlet, comprising a body portion pivotallyconnected to said frame, and a supplementary door pivotally connected tosaid body portion, said body portion having a window therein normallycovered bysaid supplementary door, whereby, when said supplementary dooris opened, the interior of said oven may be viewed through said bodyportion, said window having a transparent member therein and beingslidingly mounted in said body portion so as to permit the movement ofsaid transparent member out of exposure to the interior of the oven.

6. The combination with a frame adapted to provide an inlet for an oven,of a door for said inlet, said door having an opening therein, and awindow movably mounted in said door and having a transparent memberadapted to be brought into opposition to said opening, whereby theinterior of said oven can be viewed from the outside.

7. The combination with a casing having an opening therein adapted toface the interior of an oven, of an illuminator having a partition,comprising an opaque portion and a transparent portion, said illuminatorbeing rotatably mounted in said casing, so as to permit the selectivejuxtaposition of either said opaque portion or said transparent portionin opposition to said opening, and means for manipulating saidilluminator.

8. The combination with a casing having an opening therein adapted toface the interior of an oven, of an illuminator having a partition,comprising an opaque portion and a transparent portion, said illuminatorbeing rotatably mounted in said casing, so as to permit the selectivejuxtaposition of either said opaque portion or said transparent portionin opposition to said opening, means for manipulating said illuminator,a jet for said illuminator, and means on said illuminator for movingsaid jet into and out of close juxtaposition to said transparent portionof said partition during its own movement.

9. The combination with a casing having an opening therein adapted toface the interior of an oven, of an illuminator having a partition,comprising an opaque portion and a transparent portion, said illuminatorbeingrotatably mounted in said casing, so as to permit the selectivejuxtaposition of either said opaque portion or said transparent portionin opposition to said opening, means for manipulating said illuminator,a jet for said illuminator, means on said illuminator for moving saidjet into and out of close juxtaposition to said transparent portion ofsaid partition during its own movement, a pipe for supplying gas to saidjet, and means for controlling the supply of gas passing through saidpipe to said burner, operated in synchronism with the movement of saidilluminator.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ROBERT LIVINGTON GILLISPIE. -Witnesses:

JoHNC. JHY,Jr., ROBERT W. GILLIsPIE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

